Newsgroups: comp.unix.shell
Path: utzoo!telly!problem!druid!darcy
From: darcy@druid.uucp (D'Arcy J.M. Cain)
Subject: Re: awk, how to convert hex to decimal
Message-ID: <1991Feb7.180743.8596@druid.uucp>
Summary: A partial answer and a question
Organization: D'Arcy Cain Consulting, West Hill, Ontario
References: <23000@well.sf.ca.us>
Distribution: na
Date: Thu, 7 Feb 91 18:07:43 GMT

In article <23000@well.sf.ca.us> gregs@well.sf.ca.us (Greg Strockbine) writes:
>How do I convert a hex number (or is it string) into decimal?

The following command will convert a hex number such as 93 (stored as
HEXNUM) into decimal:

    DECNUM=`echo "16 i $HEXNUM p" | dc`

However on my system (Esix Rel D SysV3.2) at least it won't work on the
output from hd(1) since it barfs on lower case letters.  Is this the
normal way for dc to work?  I guess the following line will be a general
purpose converter but I'm sure there must be a better way.

  HEXNUM=`echo $HEXNUM | tr [a-z] [A-Z]`
  DECNUM=`echo "16 i $HEXNUM p" | dc`

-- 
D'Arcy J.M. Cain (darcy@druid)     |
D'Arcy Cain Consulting             |   There's no government
West Hill, Ontario, Canada         |   like no government!
+1 416 281 6094                    |